In stimulus-response compatibility tasks, performance is better when the handle of an object is oriented on the same side of the response than when the handle is oriented on the opposite side. Two major alternative accounts, the motor affordance and spatial accounts, have been proposed to explain this handle-hand compatibility effect. In two experiments, we tested between these two accounts by administering a go/no-go task to right-handed participants. Handled objects presented on a touchscreen were used as stimuli. Half of the participants had to reach-to-touch the stimuli by using their dominant hand, the other half by using their nondominant hand. Liftoff times (LTs), movement times (MTs) and spatial coordinates of the movement endpoints were recorded. Results from the LTs and MTs analyses showed no evidence of handle-hand compatibility effects. In contrast, the analyses of the spatial coordinates revealed that participants' touches were shifted more laterally towards the handle when the handles were oriented on the same side of the responding hand (Experiments 1 and 2). Furthermore, the right-hand touches landed higher (towards the handle) than the left-hand touches, especially when the vertical object dimension was particularly salient (Experiment 1). Overall, these results are in line with the activation of hand motor programs to reach and grasp the object as predicted by the motor account, at least for the right/dominant hand.

中文翻译：

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使用伸手触摸运动的左右手的手柄兼容性效果

在刺激-响应兼容性任务中，当对象的句柄指向响应的同一侧时，性能比句柄指向相反侧时更好。已经提出了两个主要的替代帐户，即运动可供性和空间帐户来解释这种手柄手兼容性效应。在两个实验中，我们通过对惯用右手的参与者执行通过/不通过任务在这两个帐户之间进行测试。呈现在触摸屏上的处理对象被用作刺激物。一半的参与者必须使用惯用手触摸刺激物，另一半则使用非惯用手。记录了升空时间 (LT)、运动时间 (MT) 和运动终点的空间坐标。LTs 和 MTs 分析的结果显示没有证据表明手柄手兼容性影响。相比之下，空间坐标的分析表明，当手柄位于响应手的同一侧时，参与者的触摸更横向地移向手柄（实验 1 和 2）。此外，右手触摸比左手触摸更高（朝向手柄），尤其是当垂直物体尺寸特别突出时（实验 1）。总体而言，这些结果与手部运动程序的激活一致，以达到和抓住物体，如运动帐户所预测的那样，至少对于右手/惯用手是这样。右手触摸比左手触摸更高（朝向手柄），尤其是当垂直物体尺寸特别突出时（实验 1）。总体而言，这些结果与手部运动程序的激活一致，以达到和抓住物体，如运动帐户所预测的那样，至少对于右手/惯用手是这样。右手触摸比左手触摸更高（朝向手柄），尤其是当垂直物体尺寸特别突出时（实验 1）。总体而言，这些结果与手部运动程序的激活一致，以达到和抓住物体，如运动帐户所预测的那样，至少对于右手/惯用手是这样。